A short Arkansas trail leads to a cave-fed spring, clear rushing water, limestone bluffs, mossy rocks, and one unforgettable Ozark view.

While you may not have heard the term water turbidity before, you've probably seen it. Think about a muddy puddle or runoff on a road after a storm. The water looks murky. That's high turbidity.

Manitou Springs may be known for its proximity to Pikes Peak and Garden of the Gods but it is also home to another geologic wonder: naturally filtered mineral springs that rise deep from the ground.

A resident of the Perth Hills, where thousands of litres of groundwater are extracted each week and sold as bottled water, ...